Chemistry
Explain the term redox reaction with an example involving the reaction of hydrogen sulphide with chlorine.
Answer
A chemical reaction which involves, oxidation of one substance and reduction of other substance is called a Redox Reaction.
Considering the example of the reaction of hydrogen sulphide with chlorine:
H2S + Cl2 ⟶ 2HCl + S
Here, hydrogen sulphide (H2S) is oxidised to sulphur (S) due to removal of hydrogen and chlorine (Cl2) is reduced to hydrogen chloride (HCl) due to addition of hydrogen.
Related Questions
State the use of hydrogen –
(a) As a fuel
(b) In hydrogenation of oil & coal
(c) In extraction of metals
Explain the terms – oxidation and reduction in terms of addition and removal of oxygen/hydrogen with suitable examples.
State what are oxidising and reducing agents. Give examples of oxidising and reducing agents in the gaseous, liquid and solid form. Give two tests each generally answered by oxidising and reducing agents respectively.
Select from A to G the reactant added, to give the products 1 to 5, in the preparation of hydrogen gas.
A : dilute acid
B : dilute alkali
C : cold water
D : conc. alkali
E : boiling water
F : conc. acid
G : steam- Ca(OH)2 + H2
- MgO + H2
- Fe3O4 + H2
- Al2(SO4)3 + H2
- NaAlO2 + H2